root / prex-0.9.0 / usr / bin / kill / kill.c @ 03e9c04a
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/*
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* Copyright (c) 1988, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <ctype.h> |
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#include <err.h> |
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#include <errno.h> |
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#include <signal.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#ifdef CMDBOX
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#define main(argc, argv) kill_main(argc, argv)
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#endif
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static void nosig(char *); |
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static void printsignals(FILE *); |
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static int signame_to_signum(char *); |
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static void usage(void); |
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int
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main(int argc, char *argv[]) |
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{ |
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int errors, numsig, pid;
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char *ep;
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if (argc < 2) |
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usage(); |
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numsig = SIGTERM; |
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argc--; |
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argv++; |
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if (!strcmp(*argv, "-l")) { |
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argc--, argv++; |
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if (argc > 1) |
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usage(); |
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if (argc == 1) { |
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if (isdigit((unsigned char)**argv) == 0) |
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usage(); |
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numsig = strtol(*argv, &ep, 10);
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if (!*argv || *ep)
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errx(1, "illegal signal number: %s", *argv); |
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if (numsig >= 128) |
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numsig -= 128;
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if (numsig <= 0 || numsig >= NSIG) |
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nosig(*argv); |
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printf("%s\n", sys_signame[numsig]);
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exit(0);
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} |
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printsignals(stdout); |
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exit(0);
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} |
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if (!strcmp(*argv, "-s")) { |
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argc--, argv++; |
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if (argc < 1) { |
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warnx("option requires an argument -- s");
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usage(); |
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} |
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if (strcmp(*argv, "0")) { |
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if ((numsig = signame_to_signum(*argv)) < 0) |
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nosig(*argv); |
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} else
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numsig = 0;
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argc--, argv++; |
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} else if (**argv == '-') { |
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++*argv; |
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if (isalpha(**argv)) {
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if ((numsig = signame_to_signum(*argv)) < 0) |
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nosig(*argv); |
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} else if (isdigit(**argv)) { |
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numsig = strtol(*argv, &ep, 10);
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if (!*argv || *ep)
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errx(1, "illegal signal number: %s", *argv); |
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if (numsig <= 0 || numsig >= NSIG) |
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nosig(*argv); |
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} else
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nosig(*argv); |
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argc--, argv++; |
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} |
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if (argc == 0) |
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usage(); |
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for (errors = 0; argc; argc--, argv++) { |
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pid = strtol(*argv, &ep, 10);
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if (!*argv || *ep) {
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warnx("illegal process id: %s", *argv);
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errors = 1;
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} else if (kill(pid, numsig) == -1) { |
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warn("%s", *argv);
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errors = 1;
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} |
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} |
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exit(errors); |
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} |
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static int |
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signame_to_signum(sig) |
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char *sig;
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{ |
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int n;
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if (!strncasecmp(sig, "sig", 3)) |
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sig += 3;
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for (n = 1; n < NSIG; n++) { |
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if (!strcasecmp(sys_signame[n], sig))
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return n;
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} |
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return -1; |
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} |
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static void |
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nosig(name) |
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char *name;
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{ |
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warnx("unknown signal %s; valid signals:", name);
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printsignals(stderr); |
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exit(1);
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/* NOTREACHED */
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} |
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static void |
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printsignals(fp) |
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FILE *fp; |
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{ |
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int n;
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const char *name; |
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for (n = 1; n < NSIG; n++) { |
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name = sys_signame[n]; |
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if (n == (NSIG / 2) || n == (NSIG - 1)) |
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(void)fprintf(fp, "%s\n", name); |
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else
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(void)fprintf(fp, "%s ", name); |
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} |
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} |
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static void |
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usage(void)
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{ |
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fprintf(stderr, "usage: kill [-s signal_name] pid ...\n"
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" kill -l [exit_status]\n"
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" kill -signal_name pid ...\n"
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" kill -signal_number pid ...\n");
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exit(1);
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/* NOTREACHED */
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} |